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Berkeley Life
Nitric Oxide Test Strips
In just seconds, Berkeley Life’s patented, non-invasive, Nitric Oxide saliva test strips indicate salivary nitrite levels, which are a proven precursor to Nitric Oxide levels in the body. Designed for daily use, tests trips can be used to measure nitrite levels to establish a daily baseline, assess levels before physical activity, and after each nitrate-rich meal or supplementation. Each tube includes 50 strips – enough for one month of regular testing.
Directions for use
Berkeley Life Nitric Oxide Saliva Test Strips were specifically designed to indicate salivary nitrite levels, a proven precursor to Nitric Oxide levels in the body. Use every day to establish a daily baseline, before and after a nitrate rich meal or supplement, and before physical activity.
1. Place the test strip with the “saliva here” side on your tongue and hold for 5 seconds.
2. Fold the strip over and gently press the two sides together and hold for 10 seconds.
3. Separate and compare your results using the Berkeley Test Nitric Oxide Scale on the side of the package.
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How Can Nitric Oxide Help
Sexual Health
Nitric Oxide supports vasodilation in the body, opening pathways for optimal blood flow and circulation – a
critical functionality for adequate sexual function. In men, Nitric Oxide helps to increase blood flow to the
penis, which is essential for achieving and maintaining an erection. In women, Nitric Oxide helps to increase
blood flow to the clitoris and vagina, which is essential for sexual arousal and orgasm. Nitric Oxide also plays a
critical role as a signaling molecule in the brain, assisting in the modulation of hormone activity.
- – 78% of women reported increased desire
- – 83% of women reported more satisfaction with orgasm
- – 83% of women reported reduced discomfort
- – 50% of men 45+ see ED improvement

Gut Health
Nitric oxide plays a crucial role in maintaining a healthy gut by promoting the nitrate to nitrite to nitric oxide
pathway. Dysbiosis, or disruption of the intestinal microbial ecosystem, can have a significant impact on
physical and mental health due to the gut-brain connection. A nitrate-rich diet can help prevent dysbiosis,
promote gastrointestinal health, and maintain homeostasis by supporting the gut-brain axis. Additionally,
nitrates and their metabolites are linked to healthy oral, gut, and intestinal microbiota, and may also modulate
inflammatory and immune pathways.

Heart Health
Age, lack of exercise, and diet can lead to buildup in our macro and microvasculature, narrowing the
pathways blood takes to circulate through the body. Nitric Oxide plays a crucial role in vasodilation –
widening these pathways to improve blood, oxygen, and nutrient flow while reducing the strain on the heart.
Dietary nitrates, found in leafy greens, beetroot, or supplements like Berkeley Life, support your body’s ability
to produce Nitric Oxide throughout your life.
- – 10% Decrease In Blood Pressure in 90 Days
- – 28% Increase In Circulation in 90 Days
- – Up to 20% Reduction in Inflammatory Blood Markers
- – Sustain N.O. Levels for 24 Hours

How Nitric Oxide Supports Whole-Body Health
In the late 1990s, Nobel-Prize-award-winning research revealed that Nitric Oxide acts as a critical signaling
molecule in the cardiovascular system. This research was only the beginning of a waterfall of research on the
importance of nitrates and Nitric Oxide on total-body health.
From the tops of our heads to the tips of our toes, blood flow is the key to oxygen and nutrient delivery
throughout the body. That’s why restoring and maintaining adequate Nitric Oxide levels in the body is critical.
Without healthy blood flow, our systems and tissues suffer and lose function — putting the body at risk for a
myriad of health problems.
Quickly and easily assess your Nitric Oxide levels as you track progress.
Assessing your Nitric Oxide (NO) levels every day can help you track your success with the Berkeley Life Nitric Oxide Foundation supplement, and gauge progress toward your health goals. If you are taking in adequate levels of dietary nitrate and your oral microbiome is balanced, you will see results on the Berkeley Life test strip.

Done in Only 15 Seconds
Our non-invasive test is quick and simple to perform.
Easy to Do at Home or the Office
Take the test at your convenience — anytime, anyplace.
Test Before and After Dietary Nitrates
See results of supplements in 90 minutes or less.
Gain Insights on Your NO Journey
Monitor your levels often and stay informed.

Nitrates: The Best Path to Nitric Oxide Support
Backed by peer-reviewed research, Berkeley Life’s nitrate-based formulation offers a clinically supported, reliable alternative to arginine and citrulline supplements by bypassing the declining nitric oxide synthase (NOS) pathway. Using the oral microbiome to convert dietary nitrates—sourced from vegetables like beetroot and supplemented with potassium nitrate—into nitric oxide, it provides consistent support for cardiovascular health, hormone balance, cognitive function, and overall wellness across all ages.
Nitric Oxide Decreases Naturally as We Age
Nitric Oxide production rapidly declines after age 40, and continues to decline. However, dietary nitrates found in foods like beets and leafy greens, and in supplements like Berkeley Life, can help optimize Nitric Oxide production as we age.
Read more on our blog about the role of Nitric Oxide in the body and how to best support it.

Frequently asked questions:
What is the ingredient profile?

Can I take Berkeley Life with other medications?
Berkeley Life is safe, well-tolerated, and has no counter-indications for medications. As always, work with your provider to determine the appropriate combination of medicine and supplementation for you.
What will I feel while using Berkeley Life?
Many users report feeling an increase of energy and focus after taking their first dose. More significant symptom improvement will be felt after weeks of continuous use – including sustained energy, healthy blood pressure, supported brain function, and healthy immune response.
How long do I need to take Berkeley Life before I see results?
Like all supplements, everyone will feel a difference at different speeds. We have some patients who notice a difference right away, and some see benefits after using the product for about a month. However, you can validate that the product is working by using our test strip before and 90 minutes after you supplement.
Is Berkeley Life safe for someone with oxalate sensitivities?
Yes, Berkeley Life is generally safe for individuals with oxalate sensitivities. While oxalate sensitivity affects a small percentage of people (~2%) due to genetic factors limiting their ability to break down oxalates, many can still tolerate small amounts of oxalates with good digestion practices, such as chewing thoroughly, staying hydrated, and possibly using digestive enzyme supplements.
The oxalate content in Berkeley Life’s formula is extremely low—only 0.7 mg per dose, which is less than the oxalates found in a single leaf of spinach. While beetroot is a key ingredient in Berkeley Life for its dietary nitrate content, the amount is not enough to significantly affect even those with oxalate sensitivities
For those managing oxalate sensitivity or kidney stones, it’s important to focus on digestive health and reduce processed foods, sugars, and alcohol rather than strictly eliminating foods or supplements like Berkeley Life. Berkeley Life’s Nitric Oxide Test Strips can also be used to monitor nitric oxide levels and ensure efficacy.